TRENCH MORTAR Synonyms There are 2 synonyms of the phrase trench mortar. (exact relations) There are 7 hypernyms of the phrase trench mortar. (close relations)Did you mean?Definition of TRENCH MORTARAlso try synonyms for..trenchmortarmortarsmortaredtrencherBest Alternative Words for TRENCH MORTARTop 20Top 10 Top 20 (Default)Top 50 Top 100 All All (Default)WordsPhrases All All (Default)Verb Noun Adjective Adverb RankWordSave?More Syns..UsageType1howitzernounn2mortarverb, nounv, n Best Hypernyms For TRENCH MORTAR Here is a list of related hypernyms for trench mortar, these are close relations that fall within the same topic. Most relevant words are highlighted and in order. Words (6)armament artillery cannon firearm gun weapon Phrases (1)high-angle gun Alternatives for HOWITZER Words (1)mortarPhrases (1)trench mortarAll synonyms for howitzer